X4 PHARMACEUTICALS

LIVE

Serial Number

90847917

Owner

X4 Pharmaceuticals, Inc.

Attorney

Karen K. Won

Filing Date

Jul 26, 2021

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X4 PHARMACEUTICALS Trademark

Serial Number: 90847917 • Registration: 6843124

X4 PHARMACEUTICALS is a trademark filed by X4 Pharmaceuticals, Inc. on July 26, 2021. The trademark is classified under Class 44 (Medical Services). The application is currently registered and active.

Trademark Classes

Class 44 - Medical Services

Medical services; veterinary services; hygienic and beauty care for human beings or animals

Owner Contact Info

X4 Pharmaceuticals, Inc. (17 trademarks)

Cambridge, MA 02139

Entity Type: 03

Legal Representation

Attorney of Record

Karen K. Won

308 trademarks filed View all →

Correspondence Address

Karen K. Won Mintz, Levin, Cohn, Ferris, Glovsky, and Popeo P.C.

One Financial Center

Boston, MA 02111

United States

Trademark Details

Filing Date

July 26, 2021

Registration Date

September 13, 2022

Published for Opposition

June 28, 2022

Goods & Services

providing information in the field of the treatment of cancers, rare diseases, primary immune disorders and other diseases; genetic testing for medical purposes; genetic testing for scientific research purposes

Filing History

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Dec 9, 2025 TCCA

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Dec 9, 2025 ARAA

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

Dec 9, 2025 REAP

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Dec 9, 2025 CHAN

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Dec 9, 2025 COAR

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

Oct 21, 2025 EWAF

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Oct 21, 2025 TCCA

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Oct 21, 2025 ARAA

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

Oct 21, 2025 REAP

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Sep 13, 2022 NRCC

REGISTERED-PRINCIPAL REGISTER

Sep 13, 2022 R.PR

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jun 28, 2022 NPUB

PUBLISHED FOR OPPOSITION

Jun 28, 2022 PUBO

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jun 8, 2022 NONP

ASSIGNED TO LIE

May 20, 2022 ALIE

APPROVED FOR PUB - PRINCIPAL REGISTER

May 18, 2022 CNSA

TEAS/EMAIL CORRESPONDENCE ENTERED

May 18, 2022 TEME

CORRESPONDENCE RECEIVED IN LAW OFFICE

May 18, 2022 CRFA

TEAS RESPONSE TO OFFICE ACTION RECEIVED

May 18, 2022 TROA

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Apr 29, 2022 GNRN

NON-FINAL ACTION E-MAILED

Apr 29, 2022 GNRT

NON-FINAL ACTION WRITTEN

Apr 29, 2022 CNRT

ASSIGNED TO EXAMINER

Apr 20, 2022 DOCK

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Sep 24, 2021 NWOS

NEW APPLICATION ENTERED

Jul 29, 2021 NWAP

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